.page-about {
  --about-rule: rgba(143, 166, 184, 0.26);
  --about-rule-strong: rgba(143, 166, 184, 0.48);
  --about-body: #c9d8e4;
  --about-head: #f4f8fb;
  --about-gap: clamp(40px, 6vw, 72px);
  color: var(--about-body);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-about .gj-breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--about-rule);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 68% at 88% -8%, rgba(22, 224, 210, 0.16), transparent 68%),
    radial-gradient(52% 62% at 4% 108%, rgba(255, 179, 71, 0.11), transparent 70%);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--gj-font-display);
  font-size: clamp(2.05rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--about-head);
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 33em;
  font-size: clamp(0.98rem, 1.35vw, 1.08rem);
  line-height: 1.75;
  color: var(--about-body);
}

.page-about .about-hero__media {
  align-self: end;
}

/* ---------- 目录 + 正文布局 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding-top: clamp(36px, 6vw, 68px);
}

.page-about .about-aside {
  min-width: 0;
}

.page-about .about-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.page-about .about-toc::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__title {
  display: none;
  margin: 0 0 12px;
  font-family: var(--gj-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gj-muted);
}

.page-about .about-toc__link {
  flex: 0 0 auto;
  padding: 8px 15px;
  border: 1px solid var(--about-rule-strong);
  border-radius: var(--gj-radius-pill);
  font-size: 13px;
  line-height: 1.4;
  color: var(--gj-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--gj-ease), border-color 0.2s var(--gj-ease), background-color 0.2s var(--gj-ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link[data-active="true"] {
  color: var(--gj-cyan);
  border-color: var(--gj-cyan);
  background: rgba(22, 224, 210, 0.09);
}

/* ---------- 章节 ---------- */
.page-about .about-part {
  padding-bottom: var(--about-gap);
  margin-bottom: var(--about-gap);
  border-bottom: 1px solid var(--about-rule);
  scroll-margin-top: calc(var(--gj-header-h) + 24px);
}

.page-about .about-part:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-about .about-part h2 {
  margin: 10px 0 22px;
  font-family: var(--gj-font-display);
  font-size: clamp(1.55rem, 2.8vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--about-head);
}

.page-about .about-part h3 {
  margin: 0 0 10px;
  font-size: clamp(1.08rem, 1.7vw, 1.32rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--about-head);
}

.page-about .about-part p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: clamp(0.95rem, 1.05vw, 1.04rem);
  line-height: 1.78;
  color: var(--about-body);
}

.page-about .about-part p:last-child {
  margin-bottom: 0;
}

.page-about .about-part p strong {
  color: var(--about-head);
  font-weight: 700;
}

.page-about .about-narrow {
  max-width: 30em !important;
}

/* ---------- 阶段轨道 ---------- */
.page-about .about-rail {
  position: relative;
  margin: 26px 0 clamp(28px, 4vw, 40px);
  padding-left: 2px;
}

.page-about .about-rail::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(to bottom, var(--gj-line-strong), rgba(143, 166, 184, 0.08));
}

.page-about .about-rail__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 7px 0;
  text-decoration: none;
  color: var(--about-head);
  width: max-content;
  max-width: 100%;
}

.page-about .about-rail__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--about-rule-strong);
  border-radius: 50%;
  background: var(--gj-panel);
  font-family: var(--gj-font-mono);
  font-size: 14px;
  color: var(--gj-cyan);
  transition: border-color 0.2s var(--gj-ease), background-color 0.2s var(--gj-ease);
}

.page-about .about-rail__label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--about-head);
}

.page-about .about-rail__item:hover .about-rail__num {
  border-color: var(--gj-cyan);
  background: rgba(22, 224, 210, 0.12);
}

.page-about .about-rail__item:hover .about-rail__label {
  color: var(--gj-cyan);
}

.page-about .about-stage-media {
  margin: 0 0 clamp(26px, 4vw, 38px);
  max-width: 260px;
}

/* ---------- 阶段条目 ---------- */
.page-about .about-stages {
  display: grid;
}

.page-about .about-stage {
  padding: clamp(22px, 3vw, 30px) 0;
  border-top: 1px solid var(--about-rule);
  scroll-margin-top: calc(var(--gj-header-h) + 24px);
}

.page-about .about-stage:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-stage__eyebrow {
  margin: 0 0 6px;
  font-family: var(--gj-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gj-amber);
}

/* ---------- 数据带 ---------- */
.page-about .about-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 40px) 0 0;
  border: 1px solid var(--about-rule-strong);
  border-radius: var(--gj-radius);
  background: rgba(13, 42, 69, 0.7);
  overflow: hidden;
  position: relative;
}

.page-about .about-band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, rgba(22, 224, 210, 0.12), transparent 46%),
    repeating-linear-gradient(90deg, rgba(143, 166, 184, 0.09) 0 1px, transparent 1px 40px);
}

.page-about .about-band__item {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(18px, 3vw, 26px) clamp(16px, 2.6vw, 24px);
  border-right: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-band__num {
  font-family: var(--gj-font-mono);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gj-cyan);
}

.page-about .about-band__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gj-muted);
}

/* ---------- 团队图片 ---------- */
.page-about .about-team-media {
  margin: clamp(22px, 3vw, 30px) 0;
}

/* ---------- 服务原则 ---------- */
.page-about .about-principles {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin: clamp(24px, 3.5vw, 34px) 0 0;
}

.page-about .about-principle {
  padding: clamp(20px, 3vw, 26px);
  border: 1px solid var(--about-rule-strong);
  border-left: 3px solid var(--gj-cyan);
  border-radius: var(--gj-radius-sm);
  background: var(--gj-panel);
  box-shadow: 5px 5px 0 0 rgba(4, 16, 28, 0.85);
  transition: transform 0.2s var(--gj-ease), border-color 0.2s var(--gj-ease);
}

.page-about .about-principle:hover {
  transform: translateY(-4px);
  border-color: var(--gj-cyan);
}

.page-about .about-principle__no {
  margin: 0 0 8px;
  font-family: var(--gj-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gj-amber);
  max-width: none !important;
}

.page-about .about-principle p {
  max-width: none;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--about-body);
}

.page-about .about-principle h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 42px);
  padding: clamp(22px, 3.4vw, 32px);
  border: 1px solid var(--about-rule-strong);
  border-radius: var(--gj-radius);
  background:
    radial-gradient(70% 140% at 100% 0%, rgba(255, 179, 71, 0.14), transparent 65%),
    rgba(13, 42, 69, 0.6);
}

.page-about .about-cta__text {
  margin: 0 0 18px;
  max-width: 32em;
  font-size: 1rem;
  font-weight: 600;
  color: var(--about-head);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: clamp(36px, 5vw, 64px);
  }

  .page-about .about-hero__media {
    transform: translateY(6px);
  }

  .page-about .about-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stage-media {
    float: right;
    margin: 0 0 20px 28px;
    max-width: 220px;
  }

  .page-about .about-stage {
    overflow: hidden;
  }

  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }
}

@media (min-width: 1040px) {
  .page-about .about-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
    align-items: start;
  }

  .page-about .about-toc {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: calc(var(--gj-header-h) + 28px);
  }

  .page-about .about-toc__title {
    display: block;
  }

  .page-about .about-toc__link {
    flex: 0 0 auto;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 2px solid var(--about-rule);
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    white-space: normal;
  }

  .page-about .about-toc__link:hover {
    background: transparent;
    color: var(--gj-cyan);
    border-left-color: rgba(22, 224, 210, 0.5);
  }

  .page-about .about-toc__link[data-active="true"] {
    background: transparent;
    color: var(--gj-cyan);
    border-left-color: var(--gj-cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-principle,
  .page-about .about-rail__num,
  .page-about .about-toc__link {
    transition: none;
  }

  .page-about .about-principle:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>